Synthesis of 2-Aryl- and 2-Vinylpyrrolidines via Copper-Catalyzed Coupling of Styrenes and Dienes with Potassium β-Aminoethyl Trifluoroborates
作者:Chanchamnan Um、Sherry R. Chemler
DOI:10.1021/acs.orglett.6b01259
日期:2016.5.20
2-Arylpyrrolidines occur frequently in bioactive compounds, and thus, methods to access them from readily available reagents are valuable. We report a copper-catalyzed intermolecular carboamination of vinylarenes with potassium N-carbamoyl-β-aminoethyltrifluoroborates. The reaction occurs with terminal, 1,2-disubstituted, and 1,1-disubstituted vinylarenes bearing a number of functional groups. 1,3-Dienes
2-芳基吡咯烷经常出现在生物活性化合物中,因此从现成的试剂中获取它们的方法很有价值。我们报道了铜催化的乙烯基芳烃与N-氨基甲酰基-β-氨基乙基三氟硼酸钾的分子间碳胺化反应。该反应与带有多个官能团的末端 1,2-二取代和 1,1-二取代乙烯基芳烃发生。1,3-二烯也是良好的底物,它们的反应生成2-乙烯基吡咯烷。自由基时钟机制实验与碳自由基中间体的存在一致,并且不支持碳正离子的参与。